Review of COSRX The Vitamin C 23 Serum, expected to have a whitening effect

With each passing year, the weather is becoming hotter and more humid, and the summer season is getting longer. Even though I feel like I take good care of my skin with sun protection every year, my skin tone seems to be becoming dull and patchy. So, my routine is to focus mainly on soothing overheated skin and improving sagging elasticity during the summer, and then immerse myself in whitening care once autumn arrives and the heat subsides.

 

Now that September has arrived, I made a plan to start using whitening cosmetics. I was searching here and there, but I couldn't quite decide which one to use. Then, I saw a beauty YouTuber I enjoy watching introduce this product as the "ultimate value for money among high-concentration pure vitamins," so I decided to purchase it. The combination of affordability and high concentration, which I was looking for, felt like a major selling point. That is why I chose The Vitamin C 23 Serum.

 

Knowing that Vitamin C helps with whitening, I used a combination of pure vitamin C and vitamin derivatives for my skincare routine from last year until early this year. However, honestly, I didn't see any noticeable effects, so I thought I should try increasing the concentration next time. I had heard that pure vitamin C stings, irritates, or causes redness, but since my skin has a thick layer that usually doesn't feel irritation even when using Riddle Shot, I thought it would be worth a try.

 

 

The product was delivered with a cap on, and a dropper was included. Since the product oxidizes the moment it is opened, I had to store it in the refrigerator immediately. I had heard that pure vitamins don't smell very good, but at first, it had a somewhat savory and nutty scent. When I applied it to my hand and spread it, a metallic smell came up, but it dissipated, and after applying another moisturizer on top, it wasn't bothersome.

 

 

 

When I spread the product, it flows, but it isn't watery; it has a slight weight to it. It is moisturizing, glossy, and leaves a smooth finish. It wasn't overly oily, so I actually liked that it provided just the right amount of shine. On the first day, worried about irritation, I applied a small amount in the order of cheeks, chin, and forehead. It didn't sting, though my cheeks were slightly red, but they returned to their normal color immediately after applying a moisturizer. For the first three days, I only used about half a dropper just in case. Then, I increased the amount to a full dropper. I have been using it without any irritation so far. I think using a high-performance lotion or cream containing Secolji significantly reduces irritation.

 

It has only been ten days since I started using the product, but when I washed my face and looked in the mirror this morning, my skin looked clearer overall. The large blemishes still have a long way to go, but even though I didn't get a good night's sleep last night, my face looked in good condition this morning, as if I had slept well, which I liked. So, I plan to continue using the rest of the product daily or every other day to maintain consistent skincare.

 

This product, containing a whopping 23% pure vitamin, was priced at around 20,000 won for a 20ml bottle. The price was better than other brands. I plan to use it consistently this autumn for intensive whitening care. I recommend this to those who want to actively pursue whitening care like me, those looking for a low-irritation, high-concentration pure vitamin product, and those seeking slow-moving anti-aging care.